Question

Question 2

2.1       A brass rod of 25 mm in diameter is enclosed in a steel tube. The tube is 10 mm thick with an outside diameter of 50 mm. The bar and the tube are initially 1 m long and are rigidly fastened together at each end. Calculate the stresses in the two materials when the temperature is raised by 80 ⁰C.                               

2.2       If the composite bar is then subjected to an axial tensile load of 60 kN, find the resulting stresses.                                                                                                           

2.3       Calculate the final length of the composite rod. (use brass rod)                     

            E_st = 200 GPa; α_st = 12 x 10^-6 / ⁰C

            E_br = 100 GPa; α_br = 19 x 10^-6 / ⁰C

Answer 1